Finding the Fourth Proportional to 22,669.37, 31,274.78 and 13,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,669.37 : 31,274.78 = 13,107.50 : x
2. Step 2: Convert to fraction form
   22,669.37/31,274.78 = 13,107.50/x
3. Step 3: Cross multiply
   22,669.37x = 31,274.78 × 13,107.50
4. Step 4: Simplify right side
   22,669.37x = 409,934,250.14
5. Step 5: Solve for x
   x = 409,934,250.14/22,669.37
6. Step 6: Final answer
   x = 18,083.18